Ok, maybe my reply won't be so... haven-friendly but:
Any human past 30 or so who never got a significant relationship has certainly something amiss, like a missing fundamental element - or a combinations of missing elements or undesirable traits.
I don't know you in person so I can't tell what's wrong with you; I can just speculate of few things, but I might be mistaken:
- You extremely fixate on one guy at time and far too long time, I recall you said that your crush lasted years; this is too much, you really have to let it go. He certainly noticed that you like him, you tried to talk to him, to invite him; those things girls don't do it with male friends randomnly. He knows it but he is not acting on it - so please move on to someone else.
- I recall you mentioned you're tall and larger build than the average female in your country; you need to realize that this is a big disadvantage, and guys shorter than you wil probably never think they have a chance with you (that in case you would accept smaller guys).
- I recall you mentioned in a thread that you're English living in Scotland, and many scot kids were racist toward you when you were a kid.
If there's one thing I learned from my tinder experiments is that dating is extremely racially biased (it's a subcautious racism) - but most adult people won't admit it be like "Oh I can't help it, I only like <race>" (big lie).
Don't fool yourself that this isn't affecting your chances negatively , it doesn; but they won't admit it to you because they are adults now.
And I bet many many guys in your cohntry would be like anxious to tell their parents they like someone from a nation they (the parents) hated so much.
There's one more thing but I won't say it here.